79 lines
3.6 KiB
C++
79 lines
3.6 KiB
C++
/*******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 David Williams and Matthew Williams
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*******************************************************************************/
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#ifndef __PolyVox_CubicSurfaceExtractor_H__
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#define __PolyVox_CubicSurfaceExtractor_H__
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#include "Impl/PlatformDefinitions.h"
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#include "Array.h"
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#include "BaseVolume.h" //For wrap modes... should move these?
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#include "DefaultIsQuadNeeded.h"
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#include "Mesh.h"
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#include "Vertex.h"
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namespace PolyVox
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{
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/// A specialised vertex format which encodes the data from the cubic extraction algorithm in a very
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/// compact way. You will probably want to use the decodeVertex() function to turn it into a regular
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/// Vertex for rendering, but advanced users should also be able to decode it on the GPU (not tested).
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template<typename _DataType>
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struct CubicVertex
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{
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typedef _DataType DataType;
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/// Each component of the position is stored as a single unsigned byte.
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/// The true position is found by offseting each component by 0.5f.
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Vector3DUint8 encodedPosition;
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/// A copy of the data which was stored in the voxel which generated this vertex.
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DataType data;
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};
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// Convienient shorthand for declaring a mesh of 'cubic' vertices
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// Currently disabled because it requires GCC 4.7
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//template <typename VertexDataType, typename IndexType = DefaultIndexType>
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//using CubicMesh = Mesh< CubicVertex<VertexDataType>, IndexType >;
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/// Decodes a position from a CubicVertex
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inline Vector3DFloat decodePosition(const Vector3DUint8& encodedPosition);
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/// Decodes a CubicVertex by converting it into a regular Vertex which can then be directly used for rendering.
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template<typename DataType>
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Vertex<DataType> decodeVertex(const CubicVertex<DataType>& cubicVertex);
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/// Generates a cubic-style mesh from the voxel data.
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template<typename VolumeType, typename MeshType, typename IsQuadNeeded = DefaultIsQuadNeeded<typename VolumeType::VoxelType> >
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void extractCubicMeshCustom(VolumeType* volData, Region region, MeshType* result, IsQuadNeeded isQuadNeeded = IsQuadNeeded(), bool bMergeQuads = true);
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/// Generates a cubic-style mesh from the voxel data, placing the result into a user-provided Mesh.
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template<typename VolumeType, typename IsQuadNeeded = DefaultIsQuadNeeded<typename VolumeType::VoxelType> >
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Mesh<CubicVertex<typename VolumeType::VoxelType> > extractCubicMesh(VolumeType* volData, Region region, IsQuadNeeded isQuadNeeded = IsQuadNeeded(), bool bMergeQuads = true);
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}
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#include "CubicSurfaceExtractor.inl"
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#endif
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